Calculating a $ "Swing", (eg., scenario "A" vs "B" $ difference)

I'm asking for a formula to calculate the $ difference (swing) between different $ scenarios.

A specific example is what is the swing between not renting a house (-$700/month) vs renting monthly (+$1000/month) for a swing of $1700.  Other examples exist such as not renting (-$700) and renting on Airbnb (+200) for a $900 swing, or partial renting ($-700 vs -$100) for a $600 swing.

General examples of this are the difference between:

two negative numbers (eg., -$300 vs -$1000) = $700 swing

Mixed positive and negative (e.g., -$300 vs +$1000)= $1300 swing

two positive numbers (e.g., +$300 vs +1000)= $700 swing

Thank you!!
John HGeneral TinkererAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Rob HensonFinance AnalystCommented:
For those three examples a simple deduction gets the quoted results:

   A             B            C
-300         -1000      =B1-A1     -700
-300          1000      =B2-A2     1300
300           1000      =B3-A3       700


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
John HGeneral TinkererAuthor Commented:
Simple -  (which kinda shows how poor my math skills are :)

Rob HensonFinance AnalystCommented:
Basic rule of maths "A number minus a negative gives positive" so Minus -300 is same as plus 300
John HGeneral TinkererAuthor Commented:
Copy that.  I think kids these days learn that by 7th grade :)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Excel

From novice to tech pro — start learning today.